// ==================== 颜色变量 ====================
// 主色调
$primary-color: #3b82f6;
$primary-light: #60a5fa;
$primary-dark: #2563eb;

// 辅助色
$secondary-color: #8b5cf6;
$accent-color: #10b981;
$warning-color: #f59e0b;
$error-color: #ef4444;

// 中性色
$text-primary: #1f2937;
$text-secondary: #6b7280;
$text-tertiary: #9ca3af;
$bg-primary: #ffffff;
$bg-secondary: #f9fafb;
$bg-tertiary: #f3f4f6;
$border-color: #e5e7eb;

// 深色模式
$dark-bg-primary: #0f172a;
$dark-bg-secondary: #1e293b;
$dark-bg-tertiary: #334155;
$dark-text-primary: #f1f5f9;
$dark-text-secondary: #cbd5e1;
$dark-text-tertiary: #94a3b8;
$dark-border-color: #334155;

// ==================== 尺寸变量 ====================
// 间距
$spacing-xs: 0.25rem;   // 4px
$spacing-sm: 0.5rem;    // 8px
$spacing-md: 1rem;      // 16px
$spacing-lg: 1.5rem;    // 24px
$spacing-xl: 2rem;      // 32px
$spacing-2xl: 3rem;     // 48px
$spacing-3xl: 4rem;     // 64px

// 圆角
$radius-sm: 0.25rem;    // 4px
$radius-md: 0.5rem;     // 8px
$radius-lg: 0.75rem;    // 12px
$radius-xl: 1rem;       // 16px
$radius-full: 9999px;

// 阴影
$shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
$shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
$shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
$shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

// ==================== 字体变量 ====================
$font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
$font-family-mono: 'Fira Code', 'Courier New', monospace;

$font-size-xs: 0.75rem;    // 12px
$font-size-sm: 0.875rem;   // 14px
$font-size-base: 1rem;     // 16px
$font-size-lg: 1.125rem;   // 18px
$font-size-xl: 1.25rem;    // 20px
$font-size-2xl: 1.5rem;    // 24px
$font-size-3xl: 1.875rem;  // 30px
$font-size-4xl: 2.25rem;   // 36px
$font-size-5xl: 3rem;      // 48px

$font-weight-light: 300;
$font-weight-normal: 400;
$font-weight-medium: 500;
$font-weight-semibold: 600;
$font-weight-bold: 700;

// ==================== 断点 ====================
$breakpoint-sm: 640px;
$breakpoint-md: 768px;
$breakpoint-lg: 1024px;
$breakpoint-xl: 1280px;
$breakpoint-2xl: 1536px;

// ==================== 过渡动画 ====================
$transition-fast: 150ms;
$transition-base: 300ms;
$transition-slow: 500ms;
$transition-ease: cubic-bezier(0.4, 0, 0.2, 1);

// ==================== Z-index ====================
$z-dropdown: 1000;
$z-sticky: 1020;
$z-fixed: 1030;
$z-modal-backdrop: 1040;
$z-modal: 1050;
$z-popover: 1060;
$z-tooltip: 1070;

